Cooking device

Abstract

A cooking appliance with an improved structure to increase visibility to get a better look at the inside of a cooking room during cooking while blocking electromagnetic waves generated in the cooking room from leaking out. The cooking appliance includes a main body configured to have having a cooking room and a door arranged on the front of the main body to open or and close the cooking room. The door includes a door frame configured to have an opening formed to see into the cooking room and a conductive border portion around the opening; a shielding member arranged to cover the opening and having a conductive blocking layer configured to block electromagnetic waves; and a fixing member arranged to combine the door frame and the shielding member.

The invention claimed is: 
     
       1. A cooking appliance comprising:
 a main body including a cooking room; and 
 a door arranged on a front of the main body and configured to open and close the cooking room, 
 wherein the door comprises:
 a door frame including an opening formed to see into the cooking room and a conductive border portion around the opening, 
 a shielding member arranged to cover the opening, the shielding member including a conductive blocking layer configured to block electromagnetic waves and a first through hole, and 
 a fixing frame arranged to combine the door frame and the shielding member, and including a coupling protrusion that protrudes through the first through hole of the shielding member to combine with the door frame, and 
 
 wherein the shielding member is arranged in a manner such that the conductive blocking layer contacts the conductive border portion of the door frame to be electrically connected to the door frame. 
 
     
     
       2. The cooking appliance of  claim 1 , wherein the shielding member includes the conductive blocking layer formed with a conductive material to block electromagnetic waves applied onto a transparent plastic film or panel. 
     
     
       3. The cooking appliance of  claim 1 , wherein the shielding member includes the conductive blocking layer formed with a conductive material to block electromagnetic waves applied onto a transparent glass film or panel. 
     
     
       4. The cooking appliance of  claim 1 , wherein the fixing frame is formed in a figure corresponding to the conductive border portion of the door frame. 
     
     
       5. The cooking appliance of  claim 4 , wherein the door frame includes a coupled portion arranged in the conductive border portion and combined with the coupling protrusion of the fixing frame. 
     
     
       6. The cooking appliance of  claim 5 , wherein a plurality of coupling protrusions of the fixing frame are arranged along the conductive border portion of the door frame where the shielding member and the door frame join, and an interval between the plurality of the coupling protrusions is equal to or less than 50 mm. 
     
     
       7. The cooking appliance of  claim 5 , wherein:
 the coupling protrusion of the fixing frame comprises a welding projection protruding to the shielding member perpendicularly to the fixing frame to enable a welding position to be checked, and to be combined with the coupled portion of the door frame, 
 the welding projection passes through the first through hole of the shielding member to be combined with the coupled portion of the door frame, and 
 the coupled portion of the door frame comprises a conductive welded portion allowing the welding projection to be welded. 
 
     
     
       8. The cooking appliance of  claim 5 , wherein:
 the coupling protrusion of the fixing frame comprises a pressing portion configured to apply pressure toward the shielding member perpendicularly to the fixing frame to be combined with the coupled portion of the door frame, 
 the pressing portion passes through the first through hole of the shielding member to be combined with the coupled portion of the door frame, and 
 the coupled portion of the door frame comprises a pressed portion pressed with the pressing portion of the fixing frame. 
 
     
     
       9. The cooking appliance of  claim 5 , wherein:
 the coupling protrusion of the fixing frame comprises a burring portion including a burring hole and a side wall surrounding the burring hole and extending to the shielding member perpendicularly to the fixing frame, 
 the burring portion passes through the first through hole of the shielding member to be combined with the coupled portion of the door frame, and 
 the coupled portion of the door frame comprises a second through hole formed for the burring portion to pass through. 
 
     
     
       10. The cooking appliance of  claim 9 , wherein:
 the burring portion of the fixing frame penetrates the first through hole and the second through hole formed in the shielding member and the door frame, and 
 the side wall of the burring portion penetrating and protruding from the second through hole is bent outward in a radial direction of the burring hole to form a curling portion. 
 
     
     
       11. The cooking appliance of  claim 5 , wherein:
 the door comprises at least one screen to protect the shielding member; and 
 the at least one screen comprises a first screen arranged to cover the coupling protrusion of the fixing frame. 
 
     
     
       12. The cooking appliance of  claim 11 , wherein the at least one screen comprises a second screen arranged on an opposite side of the shielding member from the door frame to protect a side of the shielding member, on which the first screen is not arranged.